Question 922358: A study at a college in the east coast reveals that, historically, 40% of their students are minority students. If a random sample of size 60 is selected, the probability is _______ that more than half of the students in the sample will be minority students.
Answer by ewatrrr(24785)   (Show Source):
You can put this solution on YOUR website! Re TY
to Find: P(x ≤ 30)= .9555
TI: 2nd, VARS, binomcdf(need to scroll down to find) and enter (60, .40, 30)
Excel: function: BINOM.DIST(30,60,0.4,TRUE)
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p(minority) = .40, n = 60
P(x > 30) = 1 - P(x ≤ 30) = 1 - binomcdf(60, .40,30) TI Calculator
P(x > 30) = 1 - .9555 = .0445 0r 4.45%
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One could also Use Your Casio fx-115 ES plus 0r fx-991 ES plus
In a similar fashion: Mode: DIST(binomial CD).
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Recommend Using stattrek.com to check Results
until You are familiar with Using Your Calculator.
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